I researched a Vis crystal in the quaesitum and I right away got the theory for a "Crystaline Bell"!! I was so excited to start my own crystal farm. To do this, you simply make an ore of any type of crystal by filling up the crafting table spaces with one type of crystal and you right click the ore on a wall or floor somewhere. Then a cluster of crystals will appear. The Crystaline Bell lets you take individual crystals from the cluster and leave one crystal for the cluster to regrow! I now have a surplus of crystals!!